CN215553563U - Double-layer grid water retaining device and automobile pressure release valve - Google Patents

Abstract

The utility model relates to the technical field of automobiles, and discloses a double-layer grid water retaining device and an automobile pressure release valve. It includes: the water baffle comprises a first side wall and a second side wall which are oppositely arranged; the first side wall is provided with a plurality of first blind holes which are uniformly arranged at intervals, so that a plurality of first water retaining strips are formed among the first blind holes; the second side wall is provided with a plurality of second blind holes which are uniformly arranged at intervals, so that a plurality of second water retaining strips are formed among the plurality of second blind holes; the plurality of second blind holes are respectively located on the corresponding first water retaining strips, the plurality of first blind holes are respectively located on the corresponding second water retaining strips, and the first blind holes are communicated with the adjacent second blind holes. Through the water baffle that sets up double-deck net manger plate structure, the front seamless of water baffle has the manger plate function, and the blind hole of both sides is linked together and can be breathed freely.

Description

Double-layer grid water retaining device and automobile pressure release valve

Technical Field

The utility model relates to the technical field of automobiles, in particular to a double-layer grid water retaining device and an automobile pressure release valve.

Background

With the progress of the automobile industry, the sealing performance of automobiles is better and better. However, with the improvement of the sealing performance, there is a new problem that the air pressure in the vehicle body suddenly rises due to the rapid compression of the air in the vehicle body when the door is closed. A sudden increase in air pressure can cause tinnitus or other discomfort to the occupant of the vehicle. In order to solve the problem of sudden rise of air pressure in the automobile, a pressure relief valve for the automobile is commonly used in the automobile to keep the pressure balance.

The pressure relief valve for the vehicle, also called as a vehicle pressure control device, is generally arranged on a vehicle body metal plate at the tail part of the vehicle, and utilizes the physical characteristics of a valve plate made of rubber materials. The automobile pressure release valve is generally set to enable the interior of an automobile cab to be in a certain micro-positive pressure state, so that when the idling or the quality of the environment outside the automobile is poor, or when an air conditioner opens an external circulation and the whole automobile opens a door, the indoor environment pressure is kept stable, and the comfort of the environment inside the automobile is maintained.

Because the vehicle pressure release valve is communicated with the space inside and outside the vehicle, water can easily enter the vehicle from the pressure release valve when the vehicle runs in wading. Therefore, there is a need to design a water retaining device that can satisfy the waterproof and air permeable requirements when the vehicle wades.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a double-layer grid water retaining device and an automobile pressure release valve.

The technical scheme provided by the utility model is as follows:

a double-layer mesh water retaining device comprising:

the water baffle comprises a first side wall and a second side wall which are oppositely arranged;

the first side wall is provided with a plurality of first blind holes which are uniformly arranged at intervals, so that a plurality of first water retaining strips are formed among the first blind holes;

the second side wall is provided with a plurality of second blind holes which are uniformly arranged at intervals, so that a plurality of second water retaining strips are formed among the plurality of second blind holes;

the plurality of second blind holes are respectively located on the corresponding first water retaining strips, the plurality of first blind holes are respectively located on the corresponding second water retaining strips, and the first blind holes are communicated with the adjacent second blind holes.

In the technical scheme, the blind holes are respectively arranged on the two side walls of the water baffle in a staggered manner, so that the front side of the water baffle has no gap and has a front water retaining function, and the adjacent blind holes on the two sides are communicated, so that ventilation can be realized, and the water retaining and ventilating function of the water baffle is realized; the water baffle is of an integral structure, and only holes are drilled at corresponding positions on two sides of the whole water baffle during processing, so that the water baffle has the advantages of simple processing, high strength and long service life; this double-deck net water retaining device practicality is strong, can be applied to the ventilative field of different needs manger plate, for example: automobile pressure relief valves, air-conditioning air inlets, ventilation of buildings and the like.

Further preferably, a plurality of the first blind holes form a criss-cross grid structure, and a plurality of the second blind holes form a criss-cross grid structure, so that the first blind holes and the second blind holes are arranged in a staggered manner.

Further preferably, the width of the first water retaining strip is equal to the outer diameter of the second blind hole, and the width of the second water retaining strip is equal to the outer diameter of the first blind hole.

Further preferably, the first blind hole is a circular hole, an elliptical hole, a polygonal hole or a special-shaped hole;

and/or the second blind hole is a circular hole, an elliptical hole, a polygonal hole or a special-shaped hole.

Further preferably, the first blind hole is perpendicular to the water baffle, and the first blind hole extends to a first height along the first side wall in the direction of the second side wall;

the second blind hole is perpendicular to the water baffle plate, and extends to the first side wall along the second side wall by a second height;

the sum of the first height and the second height is greater than the distance between the first sidewall and the second sidewall.

Further preferably, the sum of the first height and the second height is H, the distance between the first side wall and the second side wall is L, and the size of H-L is 1mm-3 mm.

In the technical scheme, the sum of the first height and the second height is H, the distance between the first side wall and the second side wall is L, and H-L is also the gap between two adjacent blind holes, and the gap between two adjacent blind holes is set to be 1mm-3mm, so that the impact speed of water can be reduced when the water baffle is impacted by water under the condition of ensuring ventilation, and the water infiltration amount is smaller.

Further preferably, the first blind hole is a square hole, the first blind hole is provided with a first bottom wall, and the first bottom wall is obliquely arranged, so that one end, close to the first side wall, of the first bottom wall is lower than one end, close to the second side wall, of the first bottom wall;

the second blind hole is a square hole, a second bottom wall is arranged on the second blind hole, and the position of the second bottom wall is higher than that of the adjacent first bottom wall.

Among this technical scheme, through the position that is higher than adjacent first diapire with the position setting of second diapire, can effectually play the effect of keeping out to rivers to simultaneously through setting up the slope of first diapire, can effectually play the effect of guide direction to rivers, make water flow to the direction of first lateral wall, avoid water to get into one side of second lateral wall, improved water-proof effects.

Further preferably, the method further comprises the following steps: a frame;

the frame comprises a frame and a connecting plate, the frame is arranged around the connecting plate in a surrounding mode, a hollow mounting part is arranged on the connecting plate, and the water baffle is arranged at the mounting part and is connected with the connecting plate into a whole;

the connecting plate is provided with a plurality of drain holes, and the drain holes are positioned on the lower side of the water baffle.

In the technical scheme, the water baffle can be conveniently installed through the frame, and if a small amount of water permeates into the water baffle, the water can flow out through the drain hole at the bottom through the arrangement of the drain hole, so that the waterproof effect is further improved.

Preferably, one side of the connecting plate, which is close to the first side wall, is provided with a plurality of water drainage grooves, the plurality of water drainage grooves are formed in the lower side of the water baffle, one end of each water drainage groove is connected with the first blind hole in the bottom of the corresponding water drainage plate, and the other end of each water drainage groove is connected with the corresponding water drainage hole.

Among this technical scheme, set up a plurality of water drainage tank through the outside with first lateral wall, can effectually play the effect of guide direction to the rivers that get into first blind hole, make the water of first blind hole along the downward flow of first lateral wall, avoid water to pile up the one side that gets into the second lateral wall after in first blind hole, further improvement water-proof effects.

The other technical scheme provided by the utility model is as follows:

the utility model provides an automobile pressure release valve, includes any one of the above-mentioned double-deck net water retaining device, still includes:

the pressure relief valve body is installed on one side, close to the second side wall, of the water baffle.

In the technical scheme, the double-layer grid water retaining device is arranged on the outer side of the pressure release valve body, so that the vehicle can be effectively prevented from running in rainy days, particularly, rainwater enters the vehicle body to cause corrosion of a metal plate of the vehicle body under the condition that an air conditioner is started, and the user experience is further improved; meanwhile, the double-layer grid water retaining device is simple to process, high in strength and long in service life.

Compared with the prior art, the double-layer grid water retaining device and the automobile pressure release valve have the beneficial effects that:

according to the utility model, the blind holes are respectively arranged on the two side walls of the water baffle in a staggered manner, so that the front surface of the water baffle has a front water-retaining function without a gap, and the adjacent blind holes on the two sides are communicated, so that ventilation can be realized, and the water-retaining ventilation function of the water baffle is realized; the water baffle is of an integral structure, and only holes are drilled at corresponding positions on two sides of the whole water baffle during processing, so that the water baffle has the advantages of simple processing, high strength and long service life; this double-deck net water retaining device practicality is strong, can be applied to the ventilative field of different needs manger plate.

Drawings

The foregoing features, technical features, advantages and embodiments are further described in the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings.

FIG. 1 is a schematic structural view of a double-layer grid water retaining device according to an embodiment of the present invention;

FIG. 2 is a schematic front view of a double-layer grid water retaining device according to another embodiment of the present invention;

FIG. 3 is a schematic view of a back side structure of a double-layer grid water retaining device according to another embodiment of the present invention;

FIG. 4 is a schematic view of a partial structure of a double-layer grid water retaining device according to another embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a second blind via according to another embodiment of the present invention;

fig. 6 is a schematic front view of a double-layer grid water retaining device according to another embodiment of the present invention.

The reference numbers illustrate:

10. the water baffle comprises a water baffle plate, 11, a first side wall, 111, a first blind hole, 1111, a first bottom wall, 112, a first water baffle strip, 12, a second side wall, 121, a second blind hole, 1211, a second bottom wall, 1212, a stop, 1213, a through hole, 122, a second water baffle strip, 20, a frame, 21, a frame, 22, a connecting plate, 221, a water discharging hole, 222 and a water discharging groove.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.

It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In the embodiments shown in the drawings, the directions such as up, down, left, right, front, and rear are used to explain the structure and movement of various components of the present invention not absolutely but relatively. These illustrations are appropriate when these components are in the positions shown in the figures. If the description of the positions of these components changes, the indication of these directions changes accordingly.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the utility model, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

As an embodiment, as shown in fig. 1 to 3, the present embodiment provides a double-layer grid water guard device, which includes a water guard plate 10, wherein the water guard plate 10 includes a first side wall 11 and a second side wall 12 which are oppositely disposed. The first side wall 11 is provided with a plurality of first blind holes 111, and the plurality of first blind holes 111 are uniformly arranged at intervals, so that a plurality of first water retaining strips 112 are formed between the plurality of first blind holes 111. The second side wall 12 is provided with a plurality of second blind holes 121, and the plurality of second blind holes 121 are uniformly spaced, so that a plurality of second water blocking strips 122 are formed between the plurality of second blind holes 121. The plurality of second blind holes 121 are respectively located on the corresponding first water retaining strips 112, the plurality of first blind holes 111 are respectively located on the corresponding second water retaining strips 122, and the first blind holes 111 are communicated with the adjacent second blind holes 121.

As shown in fig. 2 and 3, when viewed from the direction of the first sidewall 11, the first water bar 112 refers to the other portion except the first blind hole 111; when viewed from the direction of the second sidewall 12, the second water blocking strip 122 refers to the other portion except the second blind hole 121; that is, the entire water baffle 10 is composed of the first blind hole 111, the first water bar 112, the second blind hole 121, and the second water bar 122. The first blind hole 111 and the second blind hole 121 are communicated to communicate with each other and are used for communicating two sides of the water baffle 10 to achieve a ventilation function, and the first water bar 112 and the second water bar 122 achieve a water retaining function.

In the embodiment, the blind holes are respectively arranged on the two side walls of the water baffle 10 in a staggered manner, so that the front surface of the water baffle 10 has a front water baffle function without gaps, and the adjacent blind holes on the two sides are communicated, so that ventilation can be realized, and the water baffle ventilation function of the water baffle 10 is realized; the water baffle 10 is of an integral structure, and only holes are drilled at corresponding positions on two sides of the whole water baffle during processing, so that the water baffle has the advantages of simple processing, high strength and long service life; this double-deck net water retaining device practicality is strong, can be applied to the ventilative field of different needs manger plate, for example: automobile pressure relief valves, air-conditioning air inlets, ventilation of buildings and the like.

Specifically, the first blind hole 111 may be at least one or a combination of circular holes, elliptical holes, polygonal holes or special-shaped holes; the second blind hole 121 may be at least one or a combination of circular holes, elliptical holes, multi-variable holes, or special-shaped holes. The size of first blind hole 111 and second blind hole 121 can set up according to actual demand, and the principle of its setting is under the prerequisite of guaranteeing the ventilation function, and is as little as possible with the size of first blind hole 111 and second blind hole 121 or the connecting channel setting of first blind hole 111 and second blind hole 121, and this can improve the water retaining effect as far as possible.

Preferably, the first blind hole 111 is a square hole, and the second blind hole 121 is a square hole. For example: the first blind holes 111 are square holes of 4mm by 4mm, and the second blind holes 121 are square holes of 4mm by 4 mm.

In another embodiment, as shown in fig. 1 to 3, on the basis of the above embodiment, the plurality of first blind holes 111 form a criss-cross grid structure, and the plurality of second blind holes 121 form a criss-cross grid structure, so that the first blind holes 111 and the second blind holes 121 are arranged in a staggered manner. The first blind hole 111 is a square hole, the second blind hole 121 is a square hole, the width of the first water bar 112 is equal to the side length of the second blind hole 121, and the width of the second water bar 122 is equal to the side length of the first blind hole 111.

The first blind hole 111 is perpendicular to the water baffle 10, and the first blind hole 111 extends to a first height along the direction from the first side wall 11 to the second side wall 12; the second blind hole 121 is perpendicular to the water baffle 10, and the second blind hole 121 extends a second height along the second side wall 12 towards the first side wall 11; the sum of the first height and the second height is larger than the distance between the first side wall 11 and the second side wall 12.

Preferably, the sum of the first height and the second height is H, the distance between the first side wall 11 and the second side wall 12 is L, the size of H-L is 1mm to 3mm, for example: 2 mm.

In this embodiment, when first blind hole 111 is the square hole of 4mm, second blind hole 121 is the square hole of 4mm, the sum of first height and second height is H, the distance between first lateral wall 11 and second lateral wall 12 is L, H-L also is the clearance between two adjacent blind holes, set up to 1mm-3mm through the clearance between two adjacent blind holes, can be under the ventilative condition of assurance, when breakwater 10 receives the impact of water, can reduce the impact velocity of water for the infiltration water yield is less.

In another embodiment, as shown in fig. 4, on the basis of the above embodiment, if the first sidewall 11 of the water guard plate 10 faces the outside, i.e., the side where the water source is generated; the second side wall 12 of the splash plate 10 faces inward, i.e., the side that needs to be waterproofed. The first blind hole 111 is a square hole, the first blind hole 111 is provided with a first bottom wall 1111, and the first bottom wall 1111 is obliquely arranged, so that one end of the first bottom wall 1111, which is close to the first side wall 11, is lower than one end of the first bottom wall 1111, which is close to the second side wall 12. The second blind hole 121 is a square hole, and the second blind hole 121 is provided with a second bottom wall 1211, and the position of the second bottom wall 1211 is higher than the position of the adjacent first bottom wall 1111.

In this embodiment, through setting up first diapire 111 slope, can effectually play the effect of guide direction to rivers, make the water that gets into first blind hole 111 under the effect of gravity, flow out along the direction of first diapire 1111 orientation first lateral wall 11, avoid water to get into one side of second lateral wall 12, improved water-proof effects. Through the position that is higher than adjacent first diapire 1111 with the position setting of second diapire 1211, can further prevent that water from flowing into second blind hole 121 from first blind hole 111, effectual having played the effect of keeping out to rivers, further improve water-proof effects.

Further, as shown in fig. 5, a stopper 1212 having a certain height is disposed at an end of the second bottom wall 1211 close to the second side wall 12, and the stopper 1212 can block water entering the second blind hole 121 and prevent the water from flowing into one side of the second side wall 12. A through hole 1213 is further provided in the second bottom wall 1211, and the through hole 1213 is used for draining accumulated water in the second blind hole 121. The accumulated water can be guided to the bottom of the water guard plate 10 and then discharged to one side of the first sidewall 11 by providing a through hole 1213 in each of the second blind holes 121. The bottom wall and the two side walls of the stop block 1212 and the second blind hole 121 can be integrally arranged, so that the stop block 1212 can also be used as a reinforcing rib, and the strength of the water baffle 10 is further improved.

Furthermore, a baffle plate may be disposed at an end of the first blind hole 111 close to the first sidewall 11, and the baffle plate is disposed above and at two sides of the first blind hole 111 and forms an angle with the first sidewall 11. The baffle can be an inclined plate or an arc plate. This structure can prevent effectively that water from getting into first blind hole 111 in, and does not hinder the gas permeability of first blind hole 111, and then improves the water-proof effects of breakwater.

In another embodiment, as shown in fig. 1 to 3, on the basis of the above embodiments, the double-layer grid water retaining device further includes: a frame 20; the frame 20 includes a rim 21 and a connecting plate 22. The frame 21 is arranged around the connecting plate 22, a hollow mounting part is arranged on the connecting plate 22, and the water baffle 10 is arranged at the mounting part and is connected with the connecting plate 22 into a whole. The connecting plate 22 is provided with a plurality of water drainage holes 221, and the water drainage holes 221 are located at the lower side of the splash plate 10. The fixing of the splash plate 10 is facilitated by the frame 20. One side of the bottom of the frame 21 close to the second sidewall 12 is provided with an upwardly extending enclosure, a water storage tank is formed between the enclosure and the water baffle 10, and the water storage tank is communicated with the water discharge hole 221. If a small amount of water permeates into the interior of the splash guard 10, the water also falls into the water storage tank and then flows out through the water discharge hole 221 at the bottom, and the water cannot enter one side of the splash guard 10 close to the second side wall 12, so that the waterproof effect is further improved.

Further, as shown in fig. 6, the splash plate 10 is recessed on the connection plate 22, so that the connection plate 22 protrudes from the splash plate 10. One side of the connecting plate 22 close to the first side wall 11 is provided with a plurality of drainage grooves 222, the plurality of drainage grooves 222 are longitudinally arranged at the lower side of the water baffle 10 at intervals, one end of each drainage groove 222 is connected with the bottom of the water baffle 10, and the other end of each drainage groove 222 is connected with a drainage hole 221. Set up a plurality of water drainage tank 222 through the outside with first lateral wall 11, can be effectual played the effect of guide to the rivers that get into first blind hole 111, make the water of first blind hole 111 flow downwards, avoid water to pile up the one side that gets into second lateral wall 12 after in first blind hole 111, further improvement water-proof effects.

In another embodiment, as shown in fig. 1 to 3, on the basis of the above embodiments, the present embodiment provides an automobile pressure relief valve, which includes a double-layer grid water blocking device and a pressure relief valve body. The double-layer grid water retaining device comprises a water retaining plate 10, wherein the water retaining plate 10 comprises a first side wall 11 and a second side wall 12 which are oppositely arranged. The first side wall 11 is provided with a plurality of first blind holes 111, and the plurality of first blind holes 111 are uniformly arranged at intervals, so that a plurality of first water retaining strips 112 are formed between the plurality of first blind holes 111. The second side wall 12 is provided with a plurality of second blind holes 121, and the plurality of second blind holes 121 are uniformly spaced, so that a plurality of second water blocking strips 122 are formed between the plurality of second blind holes 121. The plurality of second blind holes 121 are respectively located on the corresponding first water retaining strips 112, the plurality of first blind holes 111 are respectively located on the corresponding second water retaining strips 122, and the first blind holes 111 are communicated with the adjacent second blind holes 121. The relief valve body is arranged on one side of the water baffle 10 close to the second side wall 12.

In the embodiment, the double-layer grid water retaining device is arranged on the outer side of the pressure release valve body, so that the vehicle can be effectively prevented from running in rainy days, particularly, rainwater enters the vehicle body to cause corrosion of metal plates of the vehicle body under the condition that an air conditioner is started, and the user experience is further improved; meanwhile, the double-layer grid water retaining device is simple to process, high in strength and long in service life.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or recited in detail in a certain embodiment.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The utility model provides a double-deck net water retaining device which characterized in that includes:

the water baffle comprises a first side wall and a second side wall which are oppositely arranged;

the first side wall is provided with a plurality of first blind holes which are uniformly arranged at intervals, so that a plurality of first water retaining strips are formed among the first blind holes;

the second side wall is provided with a plurality of second blind holes which are uniformly arranged at intervals, so that a plurality of second water retaining strips are formed among the plurality of second blind holes;

the plurality of second blind holes are respectively located on the corresponding first water retaining strips, the plurality of first blind holes are respectively located on the corresponding second water retaining strips, and the first blind holes are communicated with the adjacent second blind holes.

2. The double-layer grid water retaining device of claim 1, wherein:

the first blind holes form a criss-cross grid structure, and the second blind holes form a criss-cross grid structure, so that the first blind holes and the second blind holes are arranged in a staggered manner.

3. The double-layer grid water retaining device of claim 2, wherein:

the width of the first water retaining strip is equal to the outer diameter of the second blind hole, and the width of the second water retaining strip is equal to the outer diameter of the first blind hole.

4. The double-layer grid water retaining device of claim 1, wherein:

the first blind hole is a circular hole, an elliptical hole, a polygonal hole or a special-shaped hole;

and/or the second blind hole is a circular hole, an elliptical hole, a polygonal hole or a special-shaped hole.

5. The double-layer grid water retaining device of claim 1, wherein:

the first blind hole is perpendicular to the water baffle plate, and extends to the second side wall along the first side wall by a first height;

the second blind hole is perpendicular to the water baffle plate, and extends to the first side wall along the second side wall by a second height;

the sum of the first height and the second height is greater than the distance between the first sidewall and the second sidewall.

6. The double-layer grid water retaining device of claim 5, wherein:

the sum of the first height and the second height is H, the distance between the first side wall and the second side wall is L, and the size of H-L is 1mm-3 mm.

7. The double-layer grid water retaining device of claim 5, wherein:

the first blind hole is a square hole and is provided with a first bottom wall, and the first bottom wall is obliquely arranged, so that one end, close to the first side wall, of the first bottom wall is lower than one end, close to the second side wall, of the first bottom wall;

the second blind hole is a square hole, a second bottom wall is arranged on the second blind hole, and the position of the second bottom wall is higher than that of the adjacent first bottom wall.

8. The double-layer grid water stop device according to any one of claims 1 to 7, further comprising: a frame;

the frame comprises a frame and a connecting plate, the frame is arranged around the connecting plate in a surrounding mode, a hollow mounting part is arranged on the connecting plate, and the water baffle is arranged at the mounting part and is connected with the connecting plate into a whole;

the connecting plate is provided with a plurality of drain holes, and the drain holes are positioned on the lower side of the water baffle.

9. The double-layer grid water retaining device of claim 8, wherein:

one side of the connecting plate, which is close to the first side wall, is provided with a plurality of water drainage grooves, the plurality of water drainage grooves are arranged on the lower side of the water baffle, one end of each water drainage groove is connected with the first blind hole in the bottom of the water baffle, and the other end of each water drainage groove is connected with the corresponding water drainage hole.

10. A pressure relief valve for an automobile, comprising the double-layer mesh water blocking device of any one of claims 1 to 9, further comprising:

the pressure relief valve body is installed on one side, close to the second side wall, of the water baffle.

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